Exercise device



FIG. 1 is a front view of an exercise device.

FIG. 2 is a rear view of the exercise device of FIG. 1.

FIG. 3 is a left side view of the exercise device of FIG. 1.

FIG. 4 is a right side view of the exercise device of FIG. 1.

FIG. 5 is a top view of the exercise device of FIG. 1; and,

FIG. 6 is a bottom view of the exercise device of FIG. 1.

In the illustrated design, the dash-dot-dot-dash lines represent a boundary between a first appearance and a contrasting appearance. 

CLAIM The ornamental design for an exercise device, as shown and described. 